This discussion came up at work. We all agreed on how a typical 3p 120/240v delta with a high leg and center tap in one of the windings for the neutral works. However someone said they use to do a 3 phase system that also had a high leg but only used 2 transformers. The discussion was all based on pole mounted utility transformers. I couldn't think of how that would work, unless the phases are not truly 120 degrees apart. So is one winding center tapped and that gives you 2 "phases" and the the other would be 180 degrees off the center of the the one thats tapped making it 90 degrees off each of the others? I would LOOOOVE a drawing of this. Thanks guys!!!